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US20030139132A1 - Heating and/or air conditioning unit for a vehicle with a partial air guide duct - Google Patents

Heating and/or air conditioning unit for a vehicle with a partial air guide duct Download PDF

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Publication number
US20030139132A1
US20030139132A1 US10/130,502 US13050202A US2003139132A1 US 20030139132 A1 US20030139132 A1 US 20030139132A1 US 13050202 A US13050202 A US 13050202A US 2003139132 A1 US2003139132 A1 US 2003139132A1
Authority
US
United States
Prior art keywords
duct
air
air guide
guide duct
partial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/130,502
Other languages
English (en)
Inventor
Siegfried Derx
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Klimasysteme GmbH
Original Assignee
Valeo Klimasysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Klimasysteme GmbH filed Critical Valeo Klimasysteme GmbH
Assigned to VALEO KLIMASYSTEME GMBH reassignment VALEO KLIMASYSTEME GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DERX, SIEGFRIED
Publication of US20030139132A1 publication Critical patent/US20030139132A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00064—Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device

Definitions

  • the present invention relates to a heating and/or air conditioning unit for a vehicle.
  • a heating and/or air conditioning unit for a vehicle usually comprises a heat exchanger, to the outlet side of which a temperature flap, a duct which serves, at least in sections, as mixing chamber and/or distributor, an air flow control flap and an air outlet are connected.
  • a temperature flap to the outlet side of which a temperature flap, a duct which serves, at least in sections, as mixing chamber and/or distributor, an air flow control flap and an air outlet are connected.
  • engine coolant is admitted to the heat exchanger, it being also possible to provide an additional electrical heater, in the form of a PTC heating register, for example, downstream of the heat exchanger.
  • a heating and/or air conditioning unit that suggests such a virtual layering of air flows is described in FR-A-2562845. Apart from the difficulty of managing air flows at different temperatures without complete homogeneity occurring, one problem lies in providing sufficient warm air at a special point of delivery.
  • One attempt to meet the requirements of the so-called defrost mode is disclosed in FR-A-2650224, a duct being provided for supplying the defroster nozzles, which essentially extends vertically through the temperature-layered air flows.
  • the object of the present invention is to develop a known heating and/or air conditioning unit in such a way as to permit an air ducting that assists and/or modifies the temperature layering.
  • the present invention proposes a heating and/or air conditioning unit for a vehicle having a heat exchanger, to the outlet side of which a temperature flap, a duct which serves, at least in sections, as mixing chamber and/or distributor, an air flow control flap and an air outlet are connected, the unit according to the invention being characterized in that at least one section of the duct contains a partial air guide duct running essentially parallel in a duct-inside-a-duct arrangement, making it possible to carry a proportion of the heated and/or conditioned air essentially without interference from other air flows.
  • the invention permits not only a virtual air flow layering but a real air flow layering, the air fed into the partial air guide duct experiencing almost no interference from other, for example colder air flows.
  • it is possible to supply a correspondingly adjusted air flow rate at a desired correspondingly high temperature to the central outlet nozzles in the dashboard.
  • the partial air flow guide according to the invention precludes the possibility not only of any temperature influence by other air flows, but also any speed-related influence.
  • the partial air guide duct essentially extends vertically upward, so that a certain chimney effect can help to ensure that the warm air fed through is accelerated or delivered at a higher rate of flow.
  • the partial air guide duct may advantageously contain air delivery means, it being possible also to provide an electrical heating device for the partial air flow passing through as an alternative or addition.
  • the partial air guide duct is advantageously situated at the point in the duct at which the flow path from the heat exchanger to the air outlet to be supplied is shortest.
  • the flow path which in any case leads to a minimal temperature difference between heat exchanger and outlet point, is isolated from other air flows.
  • the partial air guide duct may be closed off by the air flow control flap of the associated duct section.
  • closure of the air flow control flap for all the outlets on the dashboard can also serve to close the partial air flow duct.
  • At least one air baffle element is advantageously connected upstream of the duct, in particular upstream of the temperature flap, which element when the temperature flap is opened directs the air in the partial air guide duct.
  • said air baffle element may also be of adjustable design.
  • the partial air guide duct is advantageously situated essentially in the center of the duct in a direction perpendicular to the direction of travel of the vehicle. This arrangement allows air with a temperature greatly modified by the heat exchanger to be delivered to the central nozzle, so that the occupants can be provided with an agreeable warm air sensation at an adequate air flow rate even shortly after starting.
  • a part of the wall of the partial air guide duct forms a part of the wall of the duct itself. In other words, it is advantageous if the partial air guide duct divides off a segment of the overall duct.
  • the passage area of the partial air guide duct is advantageously less than 1 ⁇ 2 and in particular less than 1 ⁇ 3 of the overall passage area of the duct. This arrangement leaves a sufficient volume, in addition to the partial air guide duct, for air that may be mixed from cold air and warm air, which is to be fed to a corresponding outlet point or to another outlet point.
  • the partial air guide duct has a geometry of similar design to the duct.
  • FIG. 1 shows a diagrammatic vertical section through a heating and/or air conditioning unit according to a preferred embodiment of the invention
  • FIG. 2 shows parts of a horizontal section through the embodiment shown in FIG. 1, immediately above the temperature flap,
  • FIG. 3 shows a side view similar to FIG. 2, but at a level directly below the air flow control flap.
  • the heating and air conditioning unit represented in FIG. 1 conventionally comprises an evaporator 2 , that can be acted upon by a fan (not shown). A proportion of the air emerging from the evaporator 2 is fed, according to the setting of a control flap 8 , through a heating element, which on the fluid side is supplied with engine coolant.
  • electrical heating in the form of a PTC heating register, for example, can be connected downstream of the heat exchanger 4 . That fraction of air coming from the evaporator 2 that is not fed through the heat exchanger 4 is made to bypass the heat exchanger 4 , essentially above the latter, it being possible to control this air fraction by means of a so-called temperature flap 10 . At the same time, the temperature flap 10 controls the quantity of air passing through the heat exchanger 4 .
  • any mixing that occurs between air heated by the heat exchanger 4 and air cooled by the evaporator 2 takes place at the take-off end of the temperature flap 10 .
  • the area swept by the temperature flap 10 on the outer section is generally capable of feeding three duct sections, that is a so-called defrost duct 24 , a dashboard air outlet duct 20 and a foot well air duct 26 .
  • Each of these duct sections 20 , 24 , 26 is provided with an air flow control means 12 , 14 and 16 respectively, so that the respective duct can be selectively opened or shut off independently of the other duct sections.
  • the individual ventilation and/or air conditioning modes are essentially represented by the control flap 8 and an interaction between the temperature flap 10 and the respective air flow control flaps 12 , 14 and 16 .
  • defrost mode maximum warm air output is to be provided at the windshield.
  • the flap 8 and the temperature flap 10 are therefore each fully opened.
  • the air heated by the heat exchanger 4 is therefore simultaneously available at the orifice areas of the ducts 20 , 24 , 26 , the ducts 20 and 26 being closed by the respective air flow control means 12 and 16 , so that the warm air is fed exclusively to the windshield.
  • a temperature layering is neither required nor advisable, especially since there is no possibility of interference by other air flows.
  • the present invention is therefore rather aimed at a situation in which the temperature flap 10 is in an intermediate position, or one in which other air flows are present in ducts or partial ducts 20 , 24 , 26 that have not been shut off (for example, cold air return flow from the foot well).
  • the conventional temperature layering can often not lead to the desired temperature distribution.
  • the central nozzle at dashboard height is primarily to be supplied with warm air.
  • a partial air guide duct 22 which in the embodiment shown essentially extends from the temperature flap 10 to the closed position of the air flow control means 12 (in this case the central nozzle flap), is assigned to the duct 20 leading to this central nozzle on the orifice side, that is to say immediately adjoining the temperature flap.
  • the partial air guide duct 22 forms a “warm air duct”, which describes the shortest flow path between the heat exchanger 4 and the central nozzle.
  • a fan element (not shown) being optionally capable of replacing and/or assisting this function.
  • an electrical heater such as a PTC heating register, in this area, that is to say inside the partial air guide duct 22 may be of advantage, for example, where the heating heat exchanger 4 cannot yet provide the desired heat output after starting the vehicle.
  • the orifice area of the partial air guide duct essentially corresponds to the kinematics of the temperature flap 10 .
  • air baffle elements 6 are provided, which on the whole concentrate the air flow into that area in which the partial air guide duct 22 is situated.
  • the partial air guide duct occupies only a part of the overall cross section of the duct in question.
  • the area is equal to approximately one third of the overall air passage area, the two ducts, as shown, having a common wall section.
  • the partial air guide duct essentially extends centrally in a direction perpendicular to the direction of travel of the vehicle, so that air present in the mixing area, that is to say downstream of the temperature flap, that is not fed through the partial air guide duct can be distributed as required to the ducts.
  • the profile contour selected for the partial air guide duct which allows the ducting system leading to the foot well to be fed advantageously in terms of the fluid mechanics.
  • the partial air flow duct is obviously not limited exclusively to the warmest fraction of the overall air flow, but can be similarly applied to the coldest fraction, or to any intermediate fraction.
  • the relevant factor is rather that a selected part of the air flow available can be ducted in such a way that it is not subject, at least in sections, to unwanted influences from other air flows.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
US10/130,502 1999-12-01 2000-11-29 Heating and/or air conditioning unit for a vehicle with a partial air guide duct Abandoned US20030139132A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19957859A DE19957859A1 (de) 1999-12-01 1999-12-01 Heiz- und/oder Klimaanlage für ein Fahrzeug mit Teilluftführungskanal
DE19957859.1 1999-12-01

Publications (1)

Publication Number Publication Date
US20030139132A1 true US20030139132A1 (en) 2003-07-24

Family

ID=7931017

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/130,502 Abandoned US20030139132A1 (en) 1999-12-01 2000-11-29 Heating and/or air conditioning unit for a vehicle with a partial air guide duct

Country Status (6)

Country Link
US (1) US20030139132A1 (fr)
EP (1) EP1237742B1 (fr)
CZ (1) CZ295627B6 (fr)
DE (1) DE19957859A1 (fr)
ES (1) ES2206339T3 (fr)
WO (1) WO2001040002A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090098818A1 (en) * 2007-10-16 2009-04-16 Mark Gruenberg Vehicle Register Air Flow Straightener
JP2010018248A (ja) * 2008-07-14 2010-01-28 Denso Corp 車両用空調装置
US20100167635A1 (en) * 2008-12-26 2010-07-01 Denso Corporation Air conditioner for vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147113B4 (de) * 2001-09-25 2006-03-16 Visteon Global Technologies, Inc., Dearborn Vorrichtung zum Temperieren und Belüften von Kraftfahrzeugen
DE10161751A1 (de) * 2001-12-15 2003-06-18 Behr Gmbh & Co Heiz-oder Klimaanlage für ein Kraftfahrzeug
US7074122B2 (en) 2004-11-03 2006-07-11 Visteon Global Technologies, Inc. Air stream mixing conduit in an air handling module

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531671A (en) * 1983-06-28 1985-07-30 General Motors Corporation Heating and ventilating system for the occupant compartment of a motor vehicle
US5109755A (en) * 1989-07-28 1992-05-05 Valeo Heating and ventilating apparatus for the cabin of an automotive vehicle
US5462483A (en) * 1992-12-02 1995-10-31 Valeo Thermique Habitacle Heating and ventilating and/or air conditioning apparatus for the cabin of a motor vehicle
US5738579A (en) * 1995-12-22 1998-04-14 Valeo Climatisation Heating ventilating and/or air conditioning apparatus, especially for motor vehicles
US6581678B1 (en) * 1997-09-10 2003-06-24 Behr Gmbh & Co. Heating or air-conditioning system for a motor vehicle
US6607029B2 (en) * 1997-03-25 2003-08-19 Valeo Climatisation Heating and ventilating apparatus for a motor vehicle with selective control in different zones of the cabin
US6668909B2 (en) * 2000-02-22 2003-12-30 Valeo Climatisation Air-conditioning device for motor vehicle
US6685554B2 (en) * 2000-10-20 2004-02-03 Valeo Klimasysteme Gmbh Air guide box
US6810952B2 (en) * 2000-03-10 2004-11-02 Valeo Climatisation Vehicle air-conditioning device including a multi-purpose heat exchanger
US6881140B2 (en) * 2003-03-31 2005-04-19 Trw Automotive U.S. Llc Apparatus for mixing air in a vehicle HVAC system
US6945323B2 (en) * 2003-09-08 2005-09-20 Honda Motor Co., Ltd. Automotive air conditioning system
US6971440B1 (en) * 1997-07-24 2005-12-06 Behr Gmbh & Co. Heating or air-conditioning system for a motor vehicle
US7004245B2 (en) * 2003-10-15 2006-02-28 Abdeljawad Adel A System for aiding in prevention of engine overheating in a vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338768A1 (de) * 1983-10-26 1985-05-15 Adam Opel AG, 6090 Rüsselsheim Heiz- und belueftungseinrichtung fuer kraftfahrzeuge
FR2562845B1 (fr) * 1984-04-13 1988-07-29 Chausson Usines Sa Dispositif climatiseur pour vehicules
FR2719809B1 (fr) * 1994-05-11 1996-07-05 Valeo Thermique Habitacle Dispositif de chauffage-ventilation de l'habitacle d'un véhicule.
FR2737156B1 (fr) * 1995-07-24 1997-08-29 Valeo Climatisation Dispositif de chauffage-ventilation de l'habitacle d'un vehicule automobile
FR2740398B1 (fr) * 1995-10-26 1997-12-12 Valeo Climatisation Dispositif de chauffage-ventilation de l'habitacle d'un vehicule automobile
JP2958636B2 (ja) * 1998-03-06 1999-10-06 富士重工業株式会社 空調ユニット

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531671A (en) * 1983-06-28 1985-07-30 General Motors Corporation Heating and ventilating system for the occupant compartment of a motor vehicle
US5109755A (en) * 1989-07-28 1992-05-05 Valeo Heating and ventilating apparatus for the cabin of an automotive vehicle
US5462483A (en) * 1992-12-02 1995-10-31 Valeo Thermique Habitacle Heating and ventilating and/or air conditioning apparatus for the cabin of a motor vehicle
US5738579A (en) * 1995-12-22 1998-04-14 Valeo Climatisation Heating ventilating and/or air conditioning apparatus, especially for motor vehicles
US6607029B2 (en) * 1997-03-25 2003-08-19 Valeo Climatisation Heating and ventilating apparatus for a motor vehicle with selective control in different zones of the cabin
US6971440B1 (en) * 1997-07-24 2005-12-06 Behr Gmbh & Co. Heating or air-conditioning system for a motor vehicle
US6581678B1 (en) * 1997-09-10 2003-06-24 Behr Gmbh & Co. Heating or air-conditioning system for a motor vehicle
US6668909B2 (en) * 2000-02-22 2003-12-30 Valeo Climatisation Air-conditioning device for motor vehicle
US6810952B2 (en) * 2000-03-10 2004-11-02 Valeo Climatisation Vehicle air-conditioning device including a multi-purpose heat exchanger
US6685554B2 (en) * 2000-10-20 2004-02-03 Valeo Klimasysteme Gmbh Air guide box
US6881140B2 (en) * 2003-03-31 2005-04-19 Trw Automotive U.S. Llc Apparatus for mixing air in a vehicle HVAC system
US6945323B2 (en) * 2003-09-08 2005-09-20 Honda Motor Co., Ltd. Automotive air conditioning system
US7004245B2 (en) * 2003-10-15 2006-02-28 Abdeljawad Adel A System for aiding in prevention of engine overheating in a vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090098818A1 (en) * 2007-10-16 2009-04-16 Mark Gruenberg Vehicle Register Air Flow Straightener
US8480461B2 (en) 2007-10-16 2013-07-09 Automotive Components Holdings, Llc Vehicle register air flow straightener
JP2010018248A (ja) * 2008-07-14 2010-01-28 Denso Corp 車両用空調装置
US20100167635A1 (en) * 2008-12-26 2010-07-01 Denso Corporation Air conditioner for vehicle
US8460073B2 (en) 2008-12-26 2013-06-11 Denso Corporation Air conditioner for vehicle

Also Published As

Publication number Publication date
CZ20022234A3 (cs) 2003-01-15
WO2001040002A9 (fr) 2002-11-07
ES2206339T3 (es) 2004-05-16
WO2001040002A1 (fr) 2001-06-07
EP1237742A1 (fr) 2002-09-11
DE19957859A1 (de) 2001-06-07
CZ295627B6 (cs) 2005-09-14
EP1237742B1 (fr) 2003-09-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: VALEO KLIMASYSTEME GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DERX, SIEGFRIED;REEL/FRAME:013416/0343

Effective date: 20020801

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION